An experiment that was carried out to study how flow rate through a solenoid valve in an automobile's pollution-control system d
epended on three factors: armature lengths, spring load, and bobbin depth. Four different levels (low, moderate, high, and extreme) of each factor were chosen, and a single observation on flow was made for each combination of levels. Requried:
a. The resulting data set consisted of how many observations?
b. Is this an enumerative or analytic study? Explain your reasoning.
a. There are 12 observations from the resulting data set.
b. This is an analytic study. It compares the flow rates through a solenoid valve based on three factors at four different levels.
Step-by-step explanation:
Observations of the dependence of flow rate
Factors Armature Spring Bobbin
Lengths Load Depth
Levels
Low 1 1 1
Moderate 1 1 1
High 1 1 1
Extreme 1 1 1
Total observations 4 4 4
Number of observations = 12
b) Whereas enumerative studies are statistical studies carried out to draw a conclusion on a process or a condition, analytic studies are statistical studies that compare two or more groups or sets of data to improve future performance. The focus of an analytic study is on the process rather than the condition. Enumerative studies tend to explain, evaluate, and describe the condition of the dataset.
we have given that the value of mean and standard deviation and we have to find the value of the z score.
So, For this purpose we know that the
Z-score indicates how much a given value differs from the standard deviation. The Z-score, or standard score, is the number of standard deviations a given data point lies above or below mean.
Answer:The number of dollars that he will receive if he exchanged 42.7 pesos is $2.3058
Step-by-step explanation:
The current exchange rate is
1 peso = 0.054 dollars.
After a trip to Mexico, Jose converted all his pesos back to dollars. The number of dollars that he will receive if he exchanged 42.7 pesos would be 42.7×0.054 = $2.3058
